Demountable rim.



w; 1 PL MOORE.

DEMUUNIABLE REM. APILKCATIQN HLEU NMLZG. 1916.

1,249,452. I Patented Dec.l1,1917.

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W. J. P, MOORE. DEMQUNTABLE RIM. prrucnmu FILED IAR. 20.1916.

1,249,452; Patented Dec.11,1917.

2 SHEETS-SHEET 2'.

UNITED STATES PATENT OFFICE.

WILL! J. 1. MOORE, OF NEW YORK, N. Y.

DEMO'UNTABLE RIM.

To all whom it may concern:

Be it known that I, WILLIAM J. P. Moons, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Demountable Rims,of which the following is a specification, reference being bad thereinto the accompanying drawing. 7

My present invention refers to certain new and useful in'iprovcl'nentsin demountable rims for wheels intended chiefly for use with automobilesand similar vehicles,- although adapted for use with any kind ofmachinery where a removable rim is employed. The object of the inventionis to provide a si1n ple and economical construction and one which maybe readily handled in the process of removing and replacing the parts.With this and other objects in view, the invention comprises essentiallythe combination of a wheel body having a transverselycurved edge and aremovable rim having an inner transversely 4 curved edge engaging thewheel, also the. combination of a felly or a band surrounding the tellyWhose peripheral edge is transversely curved, or is the segment of asphere, and a demountable rim encircling the same whose inside pephl'eledge is the segment of a corresponding sphere, the segment in the onecase be ing convex and in the'other concave, but bein concentric witheach other, and the cent r being the center of the wheel and of its axleand hub; and further, the invention comprises numerous details andpeculiarities in the construction, arrangement, and combination of theparts, substantially as will be hereinafter described.

In the accompanying drawing illustrat-- ing my invention:

figure 1 1s a cross-section of my improved demounta-ble rim at one pointin its periphery;

,F1g. 2 is a cross-section at a point in the periphery directly oppositethe section in ig. 1 so that these two figures taken together make up across-section of the entire wheel with the exception of the centralmember; v Fig. 3 is a diagrammatic cross-sectional view of a wheelprovided with my improved rim, and shows how the rim may be shiftedattend on the wheel;

Fig. 4- is a cross-section of a modified form of the inventions;

Specification of Letters.Patent:

Patented Dec. 11, 1917.

Fig. 5 is a side elevation of my in] 'n'oved demoiintable rim shown asapplie to a wheel; I

Fig. 6 is a cross-section of another modified form of the invention.

Similar characters of reference designate corresponding parts throughoutthe dill'el ent figures of the drawing.

Referring first to Figs. 1 and J, 7, 7 (lie-- note the flanged sectionsof a clencl'nw rim, holding the beads of the shot J cl? a resilienttire, 30 being the inner tube and ll) the air valve. These clenchcrsections 7 encircle the split band or ring 1 to which they are connectedby means of the wires 8 let into grooves in sections 7 and ring 1, asshown,

.said ring 1 having parallel flanges 2, 2, the

edges 12 of whichare transversely curved andv art preferably segmentsof. a sphere sti'ucli'jioni the center of the Wheelhub or axle, that isto say the center of the rim of the wheel; and said edges'of' flanges 2,2 are obviously concave.

The wheel: body proper is composed of a fixed rim 3, having parallelflanges .4, l, and a pair of lateral disks 5 that are at tached tothefixed rim and also to a central hub, as 21. The method of z-tttachingthe disks 5 to the parallel flanges 4 may vary within wide limits, andthat shown, consist ing of inturning the outer edges of disks 5 andcausing them to enter suitable grooves in members l and holding themtherein by rings 6 that are applied in a heated state and allowed tocool and weld the parts together, is only one of many that may beadopted. The edges 11 of the flanges l, 4, opposite to the edges 12 offlanges 2, 2 are segments of a sphere struck from the same center as thesphere having segments 12, so that the two spheres are concentric, andsaid edges 11 being convex; and consequently the outer ring 1 is readilymovable over the fixed rim 3, when the two parts are loosely applied toeach other and are being moved in relation to eacliiother as indicatedin the positions shown in 'l 'ig. 3. The skeleton structure of aremovable ring having side flanges and a fixed rim having side flanges,which flanges are in'contact, the convex spherical (iii segments fittingneatly Within the concave spherical segments, provides a hollow boxlikemember which is light and strongbut I it is evident that the shape andsize 0 thedesired, as shown in Figs. 4 and 6, which I shall presentlydescribe. When such flanged fixed and removable rims are used, it willbe evident that the curvature of the spherical 5 segments will becomparatively small, as the flanges are narrow and the spheres are ofsubstantial size, but this will not affect the easy engagement of thesegmental faces when they are. brought into contact, as the curvature isdclinite and pronounced enough to provide for that, as indicated by thecurved dotted lines in Figs. 1 and 2 which follow the arcs of thespheres, whose centers are at the center of the hub 21, shown in 5 5,but not in liigs. 1 and 2, as the parts in the latter figure are on suchan enlarger! scale. I

Assume now that the demountable rim is on the wheel. This means that theparts are 'in the relation shown in Figs 1 and 2, and in tall lines inFig. 3, that is to say the l 1 oi" the fixed and removable with eachother, are through their entire sidi of the flan. 2 4 h with each othei,so wed mg or binding action edges with eacn other, y in easylittingcontact. ld them so while the rim and this I do by means of a series oftransverse bolts 14, say or more, although f course any number, havingheads 15 an -crew-threaded sections 17, as carrying nu These bolts 14'pass tin-ugh tran holes cut, as shown in itric l1 and 1-2. on the beingrelatively have sated, the effect of up the nuts 16 will be to ti rlyloch i"r7,i?t$ in this position, for as the head each bolt bears againsta art f one flange 2 and a flush part of the adyacent flange-4, and asthe nut 16 on each bolt bears against a part of the other flange 2 and aflush part of the adjacent flange 4, it is manifest that by screning upthe nuts on the bolts the fixed and removable rims will be securelyclamped in their inter spherical position, which will allow the wheel tooperate as desired and the rim thereof, which now firmly secured, toperform its function of carrying the resilient tire. Further, the bolts,as they pass through holes that are in both the fixed and removablerims, prevent any circumferential movement of the removable rim on thefixed rim, that is, any creeping which might displace the rim.

When the occasion arises to demount the tire, the bolts 14 will first beremoved. The

removable rim can then be swung off the fixed rim, by turning saidremovable rim on its center as shown in dotted lines in Fig. 3 and causethe rim to follow a path indicated by the dotted circle in said figure.But the rim cannot be slid over the convexity oi the fixed rim flanges4, 4 so long as said convexity retains its true character of thesegmci'it of a circle and the concavity (if the removable rim flangesdoes the same, and hence I find it necessary to flatten one or the otherto provide means for moving one across or over the other. Thisflattening may take place at one or more points and I preferably make itat diametrically opposite points 13 in the concavity of the removablerim, see Fig. 5. Said flattening consists in a slight change in the formof the edge by changing a part of the sphericity of the segment into acylindrical segment whose axis passes through the cenlcr of the sphereand of the wheel, said cylindrical surface extending from the center ofthe edge of the rim transversely to the side of the rim in a case wherethere is onlv one spherical segment on said rim, but where there is apin-- rality of two or more smaller segments, extending from the inneredge of one of them to the outer edge, the circumferential length ofsaid cylindrical portion being greater or less as preferred; and itbeing obviousthat the amount of the cut-out part will depend upon theangle that the rim can take with relation to the wheel body while it isbeing demounted. The flattening will be enough so that when theremovable rim is turned crosswise of the fixed rim (as far as adjacentdevices may permit) it may be drawn across it and made to clear theconvexity of the latter so that the outer rim may be easily removed andjust as easily replaced.

In Fig. 4 I show a straight clencher rim 7. made in one instead of twopieces, and thickened so as to provide an inner concave face 12* whichis of the shape of a segment of a sphere, and which, when the rim is-onthe wheel, is normally in contat. with the curved face 11, which is ametallic face carried on a wooden felly 18 attached to spokes 19, theremovable rim and Wheel body being held locked together by means of thebolts 20.

In another form shown in Fig. 6, there is a Wooden felly 22 Secured tospokes 29. On folly 22 is a metallic band having a face 27 which is asegment of a sphere. A ring 21 is fastened to the clencher sections 7 bymeans of wires 8, 8 and is provided witha spherical face 26, having aflattened part 28. 4

A series of bolts 23 having heads 25 and nuts 24. is used the same as inthe other forms.

In my description I have laid emphasis. upon the fact that the wheel andrim have interengaging spherical segments, but it will be understoodthat I am not restricted to this sphericity of these parts, but anyother segmental forms or shapes or curvatures may be adopted on othercenters than those specified or otherwise provided only the same resultis attained and there may be a great deal of breadth in the constructionof the means for permitting den'iountii'ig. I,

therefore, reserve the rigl'it of varying: the

details of the invention within wide limits so long as the same arecovered by the claims.

Having thus described my invention, what I, claim as new and desire tosecure by Letters Patent, is:

1. The combination of a wheel body having a peripheral face formed as aconvex spherical segment, and a ClOI'l'lOllz'iiZi-lllll*I'lll'l ,havingits inner edge formed as concave spherical segment, and adapted 2 engagethe Wheel body, and means for scoring the parts together.

2. The combination of a wheel body having its pellllllfilitl edge formedas a spherical segment, a rim having its inner edge formed also as aspherical segment, the two segments being concentric, and means forholding the sair parts in position with the segmental in contact, saidmeans consisting of bolts passing through the two parts.

8. The combination of a wheel body liaving a face formed as a sphericalsegment and a removable rim having also a face formed as a sphericalsegment, the two segments being concentric, and one segment having aflattened ortion that enables. said part to be cleared from itsengagement with the other when turned crosswise for demolmting.

4. The combination of awhcel body haw ing at its pcripl'icry a pluralityof convex segmental faces, and a rim having on the inside thereof aplurality of concave seg mental faces corresponding with the faces onthe body, the corresponding members of each pair of segmental faces beineoncentric, and means for holding the rim and the bod y in position withthe segmental faces in contact with each other.

5. The ci'nnbinatiou of a wheel body having a face fornn-d as aspherical scgmel'lt, and a ilemouutahlo rim having also a face formed asa splmrii-al segment, one of said spherical segments having a flattenedcylindrical section hose axis passes through the spherical center andextel'uls from the transverse ccnlcr of the spherical segment to oneedge.

6. The coinbinatiim oil a Wheel body having a face 'l'orincil as a.spherical segment, a, rim having, its inner edge formed also as aspherical segment, the two egments being conccntric, and one convex andthe other concave, and one segment having a. flattened part consistingof the segment of a cylinder whose axis passes through the sphericalcenter and whose section extends from the mid dlo point oi. said segmenttransversely toward ouc- Pflgl, o as to allow the dislodgment of thercmovablc from the fixed rim 1n demounting the parts.

7. The combination of a wheel body having a transversely curved face,and a rem0vable rim having an inner transversely curved face engagingthcbody face, one of said faces having a c -'lindrical' or flattened portion extending; from the point of longest diameter in the curvature ofthe faces to one of the edges of said face, and securing means forholding the edges in contact with each. other consisting of transversebolts passing through openings in both the removable and fixed parts,said bolts having heads and nuts for tightly locking the parts Intcstimonv whereof I ailix my signature.

WILLIAM J I, MOORE.

